The french philosopher of the late nineteenth century who argued that all reality is constantly in the process of evolving and can only be understood intuitively was bergson.

This is True

His name was Henry Bergson and was a known philosopher and an artist during the period. He believed that the essence of life can be seen through instinct and intuition and this was seen in his poetry which was often tied to the symbolism movement and included numerous mystic motifs like dreams or hallucinations.